do they plug into obdII for check in socal

[robm]

I was wondering if they plug into obdII for smog checks in socal. I know they will do the sniffer and visual.

[DTunedEvoX]

Yes they will ...

[PiNG]

what do they check for after plugging into obdii? check engine codes? Would they know the difference between a O2 simulator and a non o2 simulator?

I might goto state ref soon, and need to know if i should take the o2 simulator out or not... or anyone know if 272 / 272 cams will pass the sniffer?